Merge version 0.9.6 from Debian

9 files changed, 109 insertions, 39 deletions

diff --git a/apt-pkg/algorithms.cc b/apt-pkg/algorithms.cc
index 2d710097a..2f5fcc7ab 100644
--- a/apt-pkg/algorithms.cc
+++ b/apt-pkg/algorithms.cc
@@ -362,11 +362,36 @@ bool pkgDistUpgrade(pkgDepCache &Cache)
       if (I->CurrentVer != 0)
 	 Cache.MarkInstall(I, true, 0, false);
 
-   /* Now, auto upgrade all essential packages - this ensures that
-      the essential packages are present and working */
-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
-      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
-	 Cache.MarkInstall(I, true, 0, false);
+   /* Now, install each essential package which is not installed
+      (and not provided by another package in the same name group) */
+   std::string essential = _config->Find("pkgCacheGen::Essential", "all");
+   if (essential == "all")
+   {
+      for (pkgCache::GrpIterator G = Cache.GrpBegin(); G.end() == false; ++G)
+      {
+	 bool isEssential = false;
+	 bool instEssential = false;
+	 for (pkgCache::PkgIterator P = G.PackageList(); P.end() == false; P = G.NextPkg(P))
+	 {
+	    if ((P->Flags & pkgCache::Flag::Essential) != pkgCache::Flag::Essential)
+	       continue;
+	    isEssential = true;
+	    if (Cache[P].Install() == true)
+	    {
+	       instEssential = true;
+	       break;
+	    }
+	 }
+	 if (isEssential == false || instEssential == true)
+	    continue;
+	 pkgCache::PkgIterator P = G.FindPreferredPkg();
+	 Cache.MarkInstall(P, true, 0, false);
+      }
+   }
+   else if (essential != "none")
+      for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
+	 if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
+	    Cache.MarkInstall(I, true, 0, false);
    
    /* We do it again over all previously installed packages to force 
       conflict resolution on them all. */
diff --git a/apt-pkg/aptconfiguration.cc b/apt-pkg/aptconfiguration.cc
index d763546f8..d31ccb642 100644
--- a/apt-pkg/aptconfiguration.cc
+++ b/apt-pkg/aptconfiguration.cc
@@ -234,17 +234,21 @@ std::vector<std::string> const Configuration::getLanguages(bool const &All,
 	// override the configuration settings vector of languages.
 	string const forceLang = _config->Find("Acquire::Languages","");
 	if (forceLang.empty() == false) {
-		if (forceLang == "environment") {
-			codes = environment;
-		} else if (forceLang != "none")
-			codes.push_back(forceLang);
-		else //if (forceLang == "none")
-			builtin.clear();
-		allCodes = codes;
-		for (std::vector<string>::const_iterator b = builtin.begin();
-		     b != builtin.end(); ++b)
-			if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
-				allCodes.push_back(*b);
+		if (forceLang == "none") {
+			codes.clear();
+			allCodes.clear();
+			allCodes.push_back("none");
+		} else {
+			if (forceLang == "environment")
+				codes = environment;
+			else
+				codes.push_back(forceLang);
+			allCodes = codes;
+			for (std::vector<string>::const_iterator b = builtin.begin();
+			     b != builtin.end(); ++b)
+				if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
+					allCodes.push_back(*b);
+		}
 		if (All == true)
 			return allCodes;
 		else
diff --git a/apt-pkg/cacheiterators.h b/apt-pkg/cacheiterators.h
index d5e018be9..dcd353119 100644
--- a/apt-pkg/cacheiterators.h
+++ b/apt-pkg/cacheiterators.h
@@ -285,6 +285,7 @@ class pkgCache::DepIterator : public Iterator<Dependency, DepIterator> {
 	bool IsNegative() const;
 	bool IsIgnorable(PrvIterator const &Prv) const;
 	bool IsIgnorable(PkgIterator const &Pkg) const;
+	bool IsMultiArchImplicit() const;
 	void GlobOr(DepIterator &Start,DepIterator &End);
 	Version **AllTargets() const;
 	bool SmartTargetPkg(PkgIterator &Result) const;
@@ -329,8 +330,9 @@ class pkgCache::PrvIterator : public Iterator<Provides, PrvIterator> {
 	inline VerIterator OwnerVer() const {return VerIterator(*Owner,Owner->VerP + S->Version);};
 	inline PkgIterator OwnerPkg() const {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[S->Version].ParentPkg);};
 
-	inline PrvIterator() : Iterator<Provides, PrvIterator>(), Type(PrvVer) {};
+	bool IsMultiArchImplicit() const;
 
+	inline PrvIterator() : Iterator<Provides, PrvIterator>(), Type(PrvVer) {};
 	inline PrvIterator(pkgCache &Owner, Provides *Trg, Version*) :
 		Iterator<Provides, PrvIterator>(Owner, Trg), Type(PrvVer) {
 		if (S == 0)
diff --git a/apt-pkg/cdrom.cc b/apt-pkg/cdrom.cc
index c10ca6bd1..8462e8286 100644
--- a/apt-pkg/cdrom.cc
+++ b/apt-pkg/cdrom.cc
@@ -409,7 +409,7 @@ bool pkgCdrom::WriteDatabase(Configuration &Cnf)
    
    /* Write out all of the configuration directives by walking the
       configuration tree */
-   _config->Dump(Out, NULL, "%f \"%v\";\n", false);
+   Cnf.Dump(Out, NULL, "%f \"%v\";\n", false);
 
    Out.close();
 
diff --git a/apt-pkg/contrib/cmndline.cc b/apt-pkg/contrib/cmndline.cc
index 159f330a1..75d02cad4 100644
--- a/apt-pkg/contrib/cmndline.cc
+++ b/apt-pkg/contrib/cmndline.cc
@@ -92,8 +92,9 @@ bool CommandLine::Parse(int argc,const char **argv)
       // Match up to a = against the list
       Args *A;
       const char *OptEnd = strchrnul(Opt, '=');
-      for (A = ArgList; A->end() == false && 
-	   stringcasecmp(Opt,OptEnd,A->LongOpt) != 0; A++);
+      for (A = ArgList; A->end() == false &&
+	   (A->LongOpt == 0 || stringcasecmp(Opt,OptEnd,A->LongOpt) != 0);
+	   ++A);
       
       // Failed, look for a word after the first - (no-foo)
       bool PreceedMatch = false;
@@ -105,7 +106,8 @@ bool CommandLine::Parse(int argc,const char **argv)
 	 Opt++;
 	 
 	 for (A = ArgList; A->end() == false &&
-	      stringcasecmp(Opt,OptEnd,A->LongOpt) != 0; A++);
+	      (A->LongOpt == 0 || stringcasecmp(Opt,OptEnd,A->LongOpt) != 0);
+	      ++A);
 
 	 // Failed again..
 	 if (A->end() == true && OptEnd - Opt != 1)
diff --git a/apt-pkg/deb/deblistparser.cc b/apt-pkg/deb/deblistparser.cc
index 7bef6772c..4948c9be4 100644
--- a/apt-pkg/deb/deblistparser.cc
+++ b/apt-pkg/deb/deblistparser.cc
@@ -243,13 +243,12 @@ bool debListParser::UsePackage(pkgCache::PkgIterator &Pkg,
    if (Pkg->Section == 0)
       Pkg->Section = UniqFindTagWrite("Section");
 
-   // Packages which are not from the "native" arch doesn't get the essential flag
-   // in the default "native" mode - it is also possible to mark "all" or "none".
-   // The "installed" mode is handled by ParseStatus(), See #544481 and friends.
    string const static myArch = _config->Find("APT::Architecture");
-   string const static essential = _config->Find("pkgCacheGen::Essential", "native");
-   if ((essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch()) ||
-       essential == "all")
+   // Possible values are: "all", "native", "installed" and "none"
+   // The "installed" mode is handled by ParseStatus(), See #544481 and friends.
+   string const static essential = _config->Find("pkgCacheGen::Essential", "all");
+   if (essential == "all" ||
+       (essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch()))
       if (Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false)
 	 return false;
    if (Section.FindFlag("Important",Pkg->Flags,pkgCache::Flag::Important) == false)
@@ -638,16 +637,18 @@ bool debListParser::ParseDepends(pkgCache::VerIterator &Ver,
    if (Section.Find(Tag,Start,Stop) == false)
       return true;
 
-   string Package;
    string const pkgArch = Ver.Arch();
-   string Version;
-   unsigned int Op;
 
    while (1)
    {
+      string Package;
+      string Version;
+      unsigned int Op;
+
       Start = ParseDepends(Start,Stop,Package,Version,Op,false,!MultiArchEnabled);
       if (Start == 0)
 	 return _error->Error("Problem parsing dependency %s",Tag);
+      size_t const found = Package.rfind(':');
 
       if (MultiArchEnabled == true &&
 	  (Type == pkgCache::Dep::Conflicts ||
@@ -659,6 +660,18 @@ bool debListParser::ParseDepends(pkgCache::VerIterator &Ver,
 	    if (NewDepends(Ver,Package,*a,Version,Op,Type) == false)
 	       return false;
       }
+      else if (MultiArchEnabled == true && found != string::npos &&
+	       strcmp(Package.c_str() + found, ":any") != 0)
+      {
+	 string Arch = Package.substr(found+1, string::npos);
+	 Package = Package.substr(0, found);
+	 // Such dependencies are not supposed to be accepted …
+	 // … but this is probably the best thing to do.
+	 if (Arch == "native")
+	    Arch = _config->Find("APT::Architecture");
+	 if (NewDepends(Ver,Package,Arch,Version,Op,Type) == false)
+	    return false;
+      }
       else if (NewDepends(Ver,Package,pkgArch,Version,Op,Type) == false)
 	 return false;
       if (Start == Stop)
diff --git a/apt-pkg/depcache.cc b/apt-pkg/depcache.cc
index 56194e244..2656e9b42 100644
--- a/apt-pkg/depcache.cc
+++ b/apt-pkg/depcache.cc
@@ -871,7 +871,6 @@ bool pkgDepCache::IsDeleteOk(PkgIterator const &Pkg,bool rPurge,
    if (FromUser == false && Pkg->CurrentVer == 0)
    {
       StateCache &P = PkgState[Pkg->ID];
-      // Status == 2 means this applies for new installs only
       if (P.InstallVer != 0 && P.Status == 2 && (P.Flags & Flag::Auto) != Flag::Auto)
       {
 	 if (DebugMarker == true)
diff --git a/apt-pkg/edsp.cc b/apt-pkg/edsp.cc
index 791aac72f..adb8788b3 100644
--- a/apt-pkg/edsp.cc
+++ b/apt-pkg/edsp.cc
@@ -118,8 +118,7 @@ void EDSP::WriteScenarioDependency(pkgDepCache &Cache, FILE* output, pkgCache::P
    bool orGroup = false;
    for (pkgCache::DepIterator Dep = Ver.DependsList(); Dep.end() == false; ++Dep)
    {
-      // Ignore implicit dependencies for multiarch here
-      if (strcmp(Pkg.Arch(), Dep.TargetPkg().Arch()) != 0)
+      if (Dep.IsMultiArchImplicit() == true)
 	 continue;
       if (orGroup == false)
 	 dependencies[Dep->Type].append(", ");
@@ -140,8 +139,7 @@ void EDSP::WriteScenarioDependency(pkgDepCache &Cache, FILE* output, pkgCache::P
    string provides;
    for (pkgCache::PrvIterator Prv = Ver.ProvidesList(); Prv.end() == false; ++Prv)
    {
-      // Ignore implicit provides for multiarch here
-      if (strcmp(Pkg.Arch(), Prv.ParentPkg().Arch()) != 0 || strcmp(Pkg.Name(),Prv.Name()) == 0)
+      if (Prv.IsMultiArchImplicit() == true)
 	 continue;
       provides.append(", ").append(Prv.Name());
    }
@@ -159,8 +157,7 @@ void EDSP::WriteScenarioLimitedDependency(pkgDepCache &Cache, FILE* output,
    bool orGroup = false;
    for (pkgCache::DepIterator Dep = Ver.DependsList(); Dep.end() == false; ++Dep)
    {
-      // Ignore implicit dependencies for multiarch here
-      if (strcmp(Pkg.Arch(), Dep.TargetPkg().Arch()) != 0)
+      if (Dep.IsMultiArchImplicit() == true)
 	 continue;
       if (orGroup == false)
       {
@@ -193,8 +190,7 @@ void EDSP::WriteScenarioLimitedDependency(pkgDepCache &Cache, FILE* output,
    string provides;
    for (pkgCache::PrvIterator Prv = Ver.ProvidesList(); Prv.end() == false; ++Prv)
    {
-      // Ignore implicit provides for multiarch here
-      if (strcmp(Pkg.Arch(), Prv.ParentPkg().Arch()) != 0 || strcmp(Pkg.Name(),Prv.Name()) == 0)
+      if (Prv.IsMultiArchImplicit() == true)
 	 continue;
       if (pkgset.find(Prv.ParentPkg()) == pkgset.end())
 	 continue;
diff --git a/apt-pkg/pkgcache.cc b/apt-pkg/pkgcache.cc
index 997c70768..f694a237e 100644
--- a/apt-pkg/pkgcache.cc
+++ b/apt-pkg/pkgcache.cc
@@ -708,6 +708,21 @@ bool pkgCache::DepIterator::IsIgnorable(PrvIterator const &Prv) const
    return false;
 }
 									/*}}}*/
+// DepIterator::IsMultiArchImplicit - added by the cache generation	/*{{{*/
+// ---------------------------------------------------------------------
+/* MultiArch can be translated to SingleArch for an resolver and we did so,
+   by adding dependencies to help the resolver understand the problem, but
+   sometimes it is needed to identify these to ignore them… */
+bool pkgCache::DepIterator::IsMultiArchImplicit() const
+{
+   if (ParentPkg()->Arch != TargetPkg()->Arch &&
+       (S->Type == pkgCache::Dep::Replaces ||
+	S->Type == pkgCache::Dep::DpkgBreaks ||
+	S->Type == pkgCache::Dep::Conflicts))
+      return true;
+   return false;
+}
+									/*}}}*/
 // ostream operator to handle string representation of a dependecy	/*{{{*/
 // ---------------------------------------------------------------------
 /* */
@@ -946,3 +961,17 @@ pkgCache::DescIterator pkgCache::VerIterator::TranslatedDescription() const
 };
 
 									/*}}}*/
+// PrvIterator::IsMultiArchImplicit - added by the cache generation	/*{{{*/
+// ---------------------------------------------------------------------
+/* MultiArch can be translated to SingleArch for an resolver and we did so,
+   by adding provides to help the resolver understand the problem, but
+   sometimes it is needed to identify these to ignore them… */
+bool pkgCache::PrvIterator::IsMultiArchImplicit() const
+{
+   pkgCache::PkgIterator const Owner = OwnerPkg();
+   pkgCache::PkgIterator const Parent = ParentPkg();
+   if (Owner->Arch != Parent->Arch || Owner->Name == Parent->Name)
+      return true;
+   return false;
+}
+									/*}}}*/